摘要
基于DCT(离散余弦变换)的自适应水印算法因其优异的性能而被广泛地采用。该文基于DCT的自适应水印技术,提出了一种改进的水印算法。通过空间交迭的方法,该算法能够削弱传统DCT自适应水印算法的块状噪声,从而提高图像的品质。
Algorithm of Image Watermarking Based on DCT had been widely used because of its excellent characteristics.An improved perceptually adaptive watermarking algorithm based on DCT is proposed in this paper.A method of spatial overlap-add is utilized in this algorithm.It can reduce the block noise exist in the traditional DCT watermarking algorithm and improve the quality of the image.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第2期76-77,127,共3页
Computer Engineering and Applications
关键词
DCT
自适应水印
块状噪声
空间交迭
DCT,perceptually adaptive watermarking,block noise,spatial overlap-add
